could unclasp
Verbo regular: unclasp - unclasped- unclasped

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could unclasp
you could unclasp
he could unclasp
we could unclasp
you could unclasp
they could unclasp 	I could be unclasping
you could be unclasping
he could be unclasping
we could be unclasping
you could be unclasping
they could be unclasping	I could have unclasped
you could have unclasped
he could have unclasped
we could have unclasped
you could have unclasped
they could have unclasped	I could have been unclasping
you could have been unclasping
he could have been unclasping
we could have been unclasping
you could have been unclasping
they could have been unclasping	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not unclasp
you could not unclasp
he could not unclasp
we could not unclasp
you could not unclasp
they could not unclasp 	I could not be unclasping
you could not be unclasping
he could not be unclasping
we could not be unclasping
you could not be unclasping
they could not be unclasping	I could not have unclasped
you could not have unclasped
he could not have unclasped
we could not have unclasped
you could not have unclasped
they could not have unclasped	I could not have been unclasping
you could not have been unclasping
he could not have been unclasping
we could not have been unclasping
you could not have been unclasping
they could not have been unclasping	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I unclasp?
could you unclasp?
could he unclasp?
could we unclasp?
could you unclasp?
could they unclasp? 	could I be unclasping?
could you be unclasping?
could he be unclasping?
could we be unclasping?
could you be unclasping?
could they be unclasping? 	could I have unclasped?
could you have unclasped?
could he have unclasped?
could we have unclasped?
could you have unclasped?
could they have unclasped? 	could I have been unclasping?
could you have been unclasping?
could he have been unclasping?
could we have been unclasping?
could you have been unclasping?
could they have been unclasping? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not unclasp?
could you not unclasp?
could he not unclasp?
could we not unclasp?
could you not unclasp?
could they not unclasp? 	could I not be unclasping?
could you not be unclasping?
could he not be unclasping?
could we not be unclasping?
could you not be unclasping?
could they not be unclasping? 	could I not have unclasped?
could you not have unclasped?
could he not have unclasped?
could we not have unclasped?
could you not have unclasped?
could they not have unclasped? 	could I not have been unclasping?
could you not have been unclasping?
could he not have been unclasping?
could we not have been unclasping?
could you not have been unclasping?
could they not have been unclasping?